#ifndef SYMTAB_TYPETABLE_H
#define SYMTAB_TYPETABLE_H

#include <cassert>
#include <map>
#include <stack>
#include <string>
#include <functional>

#include "StackTable.h"
#include "SynTree/Declaration.h"

namespace SymTab {
    class TypeTableConflictFunction : public std::binary_function< NamedTypeDecl *, NamedTypeDecl *, NamedTypeDecl * > {
      public:
	NamedTypeDecl *operator()( NamedTypeDecl *existing, NamedTypeDecl *added ) {
	    if ( existing->get_base() == 0 ) {
		return added;
	    } else if( added->get_base() == 0 ) {
		return existing;
	    } else {
		throw SemanticError( "redeclaration of ", added );
	    }
	    assert( false );
	    return 0;
	}
    };

    typedef StackTable< NamedTypeDecl, TypeTableConflictFunction > TypeTable;
} // SymTab

#endif // SYMTAB_TYPETABLE_H